I want to let you know about an amazingly easy to use email service provider, Tutanota, that I would like to encourage everyone to use. The email service is very easy to use, they're open source, and have privacy in mind.
Tutanota focuses on privacy and security, while offering an open-source solution. Since the system is open-source, it enables security experts to verify the code that protects your emails. It is under the GPL v3 license.
You can use the email system through a web browser (http://tutanota.com/), or via the Tutanota App for your phone.
Tutanota encrypts all of your data on your device. Your emails and contacts stay private. You can even email your friends with end-to-end encryption. The email account is free, and you get an email address 
In addition to that, for $1/mo you can upgrade your account to have an email address at your own domain name. So you can use Tutanota as your email service provider for your website or business. Not only that, you can pay for it with bitcoin!
Reasons you should begin using Tutanota over Gmail, Hotmail, Yahoo, AOL, Outlook:
Their software is open-source, on Github (https://github.com/tutao/tutanota/) and, constantly audited and tested.
They are privacy focused, offering an easy to use end-to-end encryption email service. They offer two-factor authentication and PGP/S-MIME support. They even offer an encrypted calendar and encrypted data storage.
They accept bitcoin.
They are very easy to use. It is very easy to setup an account and start sending/receiving encrypted emails, even for people who are not tech-savvy.
86% of donations and service fees go to development and data center costs. The remaining 14% goes to other costs such as offices, supplies, coffee..
They are not located in the US or subjected to US regulation and oversight.
By supporting them you help them provide more great features and become better competitors to the likes of gmail
The people behind the project love what the internet should stand for; open, secure, private, decentralized. Check them out and open an email account for free!